He approached the problem ab utili.

I utilize my time wisely to accomplish my goals.

The utility of this tool is undeniable.

This tool is very useful for everyday tasks.

The law of diminishing marginal utility states that as a person consumes more units of a good, the additional satisfaction or utility derived from each additional unit of the good decreases.

He is a skilled utiliser of technology.

This tool is utilizable for various tasks.

The utilitarian approach focuses on maximizing overall happiness.

Utilitarianism is a moral theory that focuses on maximizing overall happiness.

I utilise my time wisely by reading books.